Bewertungssystem Nachhaltiges Bauen (BNB)
Neubau Büro- und Verwaltungsgebäude
Neubau Büro- und Verwaltungsgebäude
Kriterium:
Thermischer Komfort
Bewertungen anhand BNB Komfort Tool
Zone Name:
1. Operative Temperature: Summer
1.1 Selected Assessment Model
| Summer Assessment Model | DIN 4108-2 |
|---|---|
| 26 °C | N/A |
1.2 Boundary conditions for calculation or measurement (see Appendix 1)
1.3 Operating Times
| Start | End | at Weekends | |
|---|---|---|---|
| Operation Times | 8:00 h | 18:00 h | no |
1.4 Operative Temperature Distribution
| To <= 24 | 24 <= To < 25 | 25 <= To < 26 | 26 <= To < 27 | 27 <= To < 28 | 28 <= To < 29 | 29 <= To < 30 | 30 <= To | Total | |
|---|---|---|---|---|---|---|---|---|---|
| Hours (h) | 0 | 1300 | 0 | 0 | 0 | 0 | 0 | 0 | 1300 |
1.5 Time outside the category limit
| Duration (h) | Percent of operating time (%) | Degree hour (k h) | |
|---|---|---|---|
| Quality niveau I | 0 | 0 | 0 |
1.6 Points
| Operative temperature | 70 |
|---|
2. Draft: Summer
2.1 Type of air supply system
| Mechanical ventilation | Yes |
|---|---|
| Window ventilation | No |
2.1 Boundary conditions for the calculation (Mechanical ventilation)
| Data sheet | Air temperature (°C) | Air velocity (m/s) | Turbulence intensity (%) |
|---|---|---|---|
| See appendix 2 | 26 | 0.1 | 20 |
2.3 Draft Rate (DR) calculation
| DR (%) | Category BNB (15%) fulfilled / not fulfilled |
|---|---|
| 4.84 | Pass |
2.5 Points (after interpolated assessment)
| Draft | 10 |
|---|
3. Asymmetric radiation and floor temperature: Summer
3.1 Position in the room
| Width (W): Xp | Depth (D): Yp | Height (Z): sitting or standing | |
|---|---|---|---|
| Room | 6 | 6 | 3 |
| Position | 3 | 1 | 0.6 |
3.2 Boundary conditions: asymmetric radiation (for surface cooling. data sheet: see appendix 3)
| Surface temperature (°C) | Temperature of cool or hot surfaces(°C) | |
|---|---|---|
| Front wall | 26 | Not defined |
| Back wall | 26 | Not defined |
| Right wall | 26 | Not defined |
| Left wall | 26 | Not defined |
| Floor | 26 | Not defined |
| Ceiling | 26 | 16 |
3.3 3.3 Calculations: asymmetric radiation
| Percentage of dissatisfied due to radiation asymmetry (%) | Quality according to BNB | |
|---|---|---|
| Asymmetry front/back | 0.00 | Pass |
| Asymmetry right/left | 0.00 | Pass |
| Asymmetry floor/ceiling | 0.06 | Pass |
3.4 Points
| Radiation asymmetry | 10 |
|---|
4. Indoor Humidity: Summer
4.1 Boundary conditions for the calculation
| Space Volume (m³) | Infiltration (HVAC)(1/h) | Air changes per hour (1/h): Winter | Air changes per hour (1/h): Transition time | Air changes per hour (1/h): Summer | Number of persons | Other humidity sources |
|---|---|---|---|---|---|---|
| 108 | 0.2 | 0.8 | 2 | 2 | 3 | 0 |
| Number of big plants | Number of small plants | Humidity Recovery (-): Winter | Humidity Recovery (-): Transition time | Humidity Recovery (-): Summer | Pressure (Pa) | |
| 0 | 1 | 0 | 0 | 0 | 100000 |
4.2 Distribution of the absolute humidity (AH) in summer period (01.April. 30. Sept.)
| AH < 2 | 2 <= AH < 4 | 4 <= AH < 6 | 6 <= AH < 8 | 8 <= AH < 10 | 10 <= AH < 12 | 12 <= AH < 14 | 14 <= AH < 16 | 16 <= AH < 18 | 18 < AH | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Hours (h) | 0.0 | 27.0 | 135.0 | 371.0 | 419.0 | 332.0 | 13.0 | 0.0 | 1.0 | 2.0 | 1300.0 |
4.3 Time outside the category limit
| Frequency above upper limit 12 g/kg | Ratio of operating time (%) |
|---|---|
| 16 | 1.2 |
4.4 Points
| Indoor Humidity | 10.0 |
|---|
1. Operative Temperature: Winter
1.1 Boundary Conditions
1.2 Operative Temperature Distribution
| To <= 19 | 19 <= To < 20 | 20 <= To < 21 | 21 <= To < 22 | 22 <= To < 23 | 23 <= To < 24 | 24 <= To < 25 | To <= 25 | Total | |
|---|---|---|---|---|---|---|---|---|---|
| Hours (h) | 0 | 129 | 903 | 129 | 129 | 0 | 0 | 0 | 1290 |
1.3 Time outside the category limit
| Duration (h) | Percent of operating time (%) | Degree hour (k h) | |
|---|---|---|---|
| Quality niveau I | 129 | 10 | 194 |
1.4 Points
| Operative temperature | 0 |
|---|
2. Draft:Winter
2.1 Type of air supply system
| Mechanical ventilation | Yes |
|---|---|
| Window ventilation | No |
2.1 Boundary conditions for the calculation (Mechanical ventilation)
| Data sheet | Air temperature (°C) | Air velocity (m/s) | Turbulence intensity (%) |
|---|---|---|---|
| See appendix 2 | 20 | 0.15 | 30 |
2.3 Draft Rate (DR) calculation
| DR (%) | Category BNB (15 %) fulfilled / not fulfilled |
|---|---|
| 16.14 | Fail |
2.5 Points (after interpolated assessment)
| Draft | 15 |
|---|
3. Asymmetric radiation and floor temperature: Winter
3.1 Position in the room
| Width (W): Xp | Depth (D): Yp | Height (Z): sitting or standing | |
|---|---|---|---|
| Room | 6 | 6 | 3 |
| Position | 3 | 1 | 0.6 |
3.2 Boundary conditions: asymmetric radiation (for surface cooling. data sheet: see appendix 3)
| Surface temperature (°C) | Temperature of cool or hot surfaces(°C) | |
|---|---|---|
| Front wall | 20 | 16 |
| Back wall | 20 | Not defined |
| Right wall | 20 | Not defined |
| Left wall | 20 | Not defined |
| Floor | 20 | Not defined |
| Ceiling | 20 | Not defined |
3.3 3.3 Calculations: asymmetric radiation
| Percentage of dissatisfied due to radiation asymmetry (%) | Quality according to BNB | |
|---|---|---|
| Asymmetry front/back | 0.32 | Pass |
| Asymmetry right/left | 0.00 | Pass |
| Asymmetry floor/ceiling | 0.00 | Pass |
3.4 Points
| Radiation asymmetry | 20 |
|---|
4. Indoor Humidity: Winter
4.1 Boundary conditions for the calculation
| Space Volume (m³) | Infiltration (HVAC)(1/h) | Air changes per hour (1/h): Winter | Air changes per hour (1/h): Transition time | Air changes per hour (1/h): Summer | Number of persons | Other humidity sources |
|---|---|---|---|---|---|---|
| 108 | 0.2 | 0.8 | 2 | 2 | 3 | 0 |
| Number of big plants | Number of small plants | Humidity Recovery (-): Winter | Humidity Recovery (-): Transition time | Humidity Recovery (-): Summer | Pressure (Pa) | |
| 0 | 1 | 0 | 0 | 0 | 100000 |
4.2 Distribution of the relative humidity (RH) in winter period (01. Oct. 31. Mar.)
| RH <= 10 | 10 <= RH < 20 | 20 <= RH < 30 | 30 <= RH < 40 | 40 <= RH < 50 | 50 <= RH < 60 | 60 <= RH < 70 | 70 <= RH < 80 | 80 <= RH < 90 | 90 <= RH | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Hours (h) | 0.0 | 15.0 | 267.0 | 633.0 | 279.0 | 84.0 | 12.0 | 0.0 | 0.0 | 0.0 | 1290.0 |
4.3 Time outside the category limit
| Frequency below lower limit 25% RH | Ratio of operating time (%) |
|---|---|
| 78 | 6.0 |
4.4 Points
| Indoor Humidity | 24.0 |
|---|
BNB Komfort Tool